CVE-2026-56790Disclosure

LOWCVSS 7.0 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

CANBoat through 6.22, fixed in commit a5a22b7, contains an off-by-one global buffer overflow in the searchForPgn() function in analyzer/pgn.c that allows remote attackers to crash the application. Attackers can deliver a crafted NMEA-2000 message with an out-of-range PGN value over CAN bus or N2K-over-IP to trigger an out-of-bounds array access and denial of service.

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0.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-193

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

1 mentions across 1 observed day

What's happening

Technical details provided in 1 signal
Disclosure: 1 classified signal
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Disclosure

1100.0%

Referenced assets1 URL

By indicator

https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-56790

Full discourse1 post

Vulmon Vulnerability Feed@VulmonFeeds91d
Disclosure
CVE-2026-56790 Off-by-One Global Buffer Overflow in CANBoat Through 6.22 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-56790
Post summary
The post announces a newly disclosed off‑by‑one global buffer overflow vulnerability (CVE‑2026‑56790) affecting CANBoat versions up to 6.22, but no PoC, exploit code, or patch details are provided.
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